From Glock themselves:

http://www.glock.com/english/index_options.htm

I should have been specific that this is what Glock calls this on their firearm. While I do agree that the factory slide stop is a tad small to be used as a slide release, I think you are exaggerating its level of difficulty. My 8 year old son can operate it, so itcan't be that hard to accomplish. As a former Marine(assuming you are no longer active)I'm sure you have excellent combat training and can competently operate many different firearms. As a LEO I have trained with many different weapons as well. The slide does not have to be moved very far at all to release the slide.You do bringup a good point about a weak hand injury. I have been trained(as I'm sure you have as well) to use the heel of your boot, your belt, a rock or any other thing you can to rack the slide. The slide can be released on the Glock in the same manner. With practice it can be done quickly as well.